Locking device for permutation-locks.



PATENTED AUG.

DUESTERWALD. LOCKING DEVICE FOR PERMUTATION LOCKS.

APPLICATION FILED SEPT. 16. 1904.

4 III/III WITNESSES:

THE NORRIS PETERS C0,, wasumo'rou. n c.

UNITED STATES PATENT OFFICE.

FRANK DUESTERWALD, OF NEW YORK, N. Y., ASSlGiN-OR 'lO- CHARLES E.

LEIGHTON, OF BROKLYN, NEW YORK.

LOCKING DEV [C E FOR PER M UTATIO N- LOC KS Specification of Letters Patent.

Patented Aug.. 7, 1906..

To all whom it may concern-.1-

Be it known that L. FRANK DUESTERWALD, a citizen of the United States, and a resident of the city of New York, borough of Brooklyn, in the county'of Kings and State of New York, Lockin Device for Permutation-Locks, of which t efollowing is a full, clear, and exact description.

The invention relates to locking devices for permutation-locks such as shown and described in the application for Letters Patent of the United States, granted to me Decem ber 20, 1904, No. 778,018.

The object of the present invention is to provide a new and improved locking device for locking the cover of a permutation-lock in position to prevent unauthorized persons from gaining access to the mechanism-of the ermutation-lock, the said locking device being controlled by the mechanism of the permutation-lock.

The invention consists of novel features and parts and combinations of the same, as will be more fully described hereinafter and then pointed out in the claims.

A practical embodiment of the invention is represented in the accompanying drawings, forming a art of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a face view of the im rovement as applied to the permutation-loci of asafe shown with the door open. Fig. 2 is an enlarged transverse section of the same on the lines 2 2 of Figs. 1 and 3. Fig. 3 is a sectional rear elevation of the improvement on the line 3 3 of Fig. 2. Fig. 4 1s a cross-section of a modified form of the improvement. Fig. 5 is a face View of another modified form of the improvement, parts being in section; and Fig. 6 is a front face view of a portion of the permutation-lock.

On the door A of the safe A is arranged a permutation-lock B, having its tumblers B mounted on the cover B of the housing or casin B of the permutation-lock, the said tumb ers B controlling the bolt C, and the said tumblers are set to a desired: combinationand are controlled-according to this combination from a spindle D, having a knob D under the control of the operator, the spin dle carrying a dial: D indicating on a fixedv point E on a ring E, attached: tethefront of have invented a new and Improved I thesa-fe-doorA. (See Fig. 6 TheboltQ is operated from the spindle 19 as usual through the medium of the notched disk Q on the spindle and the dog (1, pivoted to the bolt and engaging the notched disk.

In: order to change the combination,- the 5 tumblers B of the permutation-hack B have gto be reset, and to enable the owner of the safe to) gain access to the said tumblers it is 'gnecessary to remove the cover B It is evident that while the safe is open an unauthori zed' person by removing the cover B: i can readily obtain access to the tumblers B iof the permutation-lock, and thereby gain 3 knowledge of the combination, sothat when i the safe'is closed and the proprietor is absent "the unauthorized person can readily open the safe and abstract the contents thereof. In order to prevent the removal of the cover B by unauthorized persons, a lock is proremoval, but allowing the owner of the safe to open the lock for convenient removal of the cover B whenever the owner desires to gain access to the tumblers tochange the combination of the permutation-lock.

In the patent above referred to- I have shown and described as the preferred form a locking device for holding the cover against removal as a separate independent permutation-lock distinct from the main permutaand inthe present invention I dispense entirely with the separate independent permutation-lock and make use of the tumblers B of the main permutation-lock B to control the locking device for the cover B The combination for brin ing'the tumblers B into the proper position or unlocking the locking device for the cover B is readon another oint E formed on the ring E and space 1 from the fixed point E", previously mentioned. (See Fi 6.) The locking device for the cover B zshown in Figs. 1, 2, and 3 of the drawings) is in the form of a bolt F, mounted to slide on theinside of the cover B and ada ted topass throu h registering apertures ormed in annular fian es B and B of which: the annular flange is integrali' with the inner'taceof the cover B and the flange B is integral with the back plate B for the housing B the said back plate being" fastened in position on the housing by a SOI'GW'B adapted to-beconcealed by a;

vided for locking the safe-cover B against tion-lock employed for controlling the bolt,

G, as hereinafter more fully described. A spring F presses the bolt F, so as to normally hold the same in the registering apertures of the flanges B and B and from the said bolt extends transversely an arm F extending across the peripheral faces of the tumblers and adapted to pass into the registering notches of the tumblers whenever the latter have been set according to the combination. When this takes place-that is, when the tumblers are set to the proper combination read on the point E then the bolt F can be shifted, as the arm F then passes into the notches of the tumblers and the free end of the bolt passes out of the registering notches in the flanges B and B thereby unlocking the cover B to allow the operator to remove the cover for resetting the tumblers, if it is desired to do so.

- In order to shift the bolt F into an unlocked position, a handle F is formed on the said bolt, and this handle extends throu h an elongated slot B formed in the cover 2 to allow the o erator to take hold of the outer end of the andle to shift the bolt F against the tension of its spring F. The arm F of the bolt F is removable, being screwed into the bolt and having its outer end notched to receive a screw-driver. The purpose of making the arm removable is to avoid a lock-out in case a mistake is made in changing the combinationthat is to say, prevent the cover from being locked until the right combination for the main bolt is ascertained. When changing the combination, the arm F 2 is removed, so that the bolt F will be free to move, thereby permitting the cover to be taken off and the combination reset if a mistake should have been made. After the proper combination has been obtained the arm is again secured to the bolt.

In the modified form shown in Fig. 4 the bolt F for unlocking the cover is provided with an arm F for engagement with the notches in the tumblers B, and fromthis arm F extends an arm F, mounted to slide in suitable bearin s B and B on the back late B and on t 's arm F is fastened the an'dle or knob F extendin through an elongated slot B formed in the back plate to allow the operator to take hold of this handle F to shift the bolt F -that is, to move the same out of engagement with the registering notches in the flanges B and B whenever ,the notches in the tumblers B register with the arm F that is, whenever the combination is properly set with a view to allow of unlocking the cover B Instead of a sliding bolt, as shown in Figs. 2 and 4, a swing-bolt H may be employed, as indicated in Fig. 5, the swing-bolt having a cross-arm H for engagement With the notches in the tumblers B, the swing-bolt also havingan arm H for enga ement With the registering notches in the anges B and B A handle H held on the sWing-bolt'I I, extends to the outside of the housing to allow the o erator to swing the bolt-arm H out of t e registering notches in the flanges B and B whenever the arm H is in re ister with the notches in all of the tumblers From the foregoing it is evident that various suitable locking devices may be employed for holding the cover B against removal, it being, however, understood that each locking device is controlled by the tumblers of the ermutation-lock B.

The ring previously mentioned, fits over the annular flange B and is held against removal therefrom by the projecting end of the cover B and the said ring G is provided with an arm G, engaging with its bent end an undercut or notch in the back plate B to prevent an unauthorized person from removing the ring and gaining access to the screw B.

It is understood that the same combination is used for opening the safe and for unlocking the cover B but the combination is read at different points-that is, for unlocking the safe the combination is read on the point E and for unlocking the cover B the combination is read on the point E Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. A permutation-lock comprising a main bolt, permutation mechanism controlling the same, an inclosing casing having a removable cover, and a locking device for said cover carried thereby and having movement independent of the movements of the bolt and cover, said locking device being controlled by the same permutation mechanism which controls said bolt, and being provided with operating means projecting to the exterior of the lock.

2. A permutation-lock comprising a main bolt, permutation mechanism controlling the same, an inclosing-casing having a removable cover, and a locking device for said cover carried thereby, and having movement independent of the movements of the bolt and cover, said locking device being controlled by the same permutation mechnism which controls said bolt.

3. A permutation-lock comprising a main bolt, permutation mechanism controlling the bolt and comprising a series of rotary tumblers, an inclosing casing provided with a removable cover which carries said tumblers, and a device also carried by said cover and capable of being operated manually, for looking the cover against removal, said device having movement independent of the movement of the said cover and controllable by aforesaid permutation mechanism.

4. A permutation-lock comprising tumblers, a main bolt controlled by the tumblers, a removable cover carrying the said .tumblers, and a locking-bolt for locking the said TIC cover against removal and controlled by the said tumblers, independent of the main bolt;

said locking-bolt carried by the cover and provided with operating means projecting therethrough.

5. A permutation-lock comprising tumblers, a main bolt controlled by the tumblers, a removable cover, and a locking-bolt controlled by said tumblers for locking the cover against removal, the said locking-bolt being independent of the main bolt and provided with a projecting handle whereby it may be operated independent of the motion of the cover.

6. A permutation-lock having tumblers, a main bolt controlled by the tumblers, a removable cover, and a locking device comprising a spring-pressed bolt for locking the cover against removal, the said spring-pressed bolt being controlled by the said tumblers and adapted to be shifted manually.

7. A permutation-lock comprising tumblers, a casing having a removable cover, and a bolt for locking the cover against removal, the bolt having a member for engaging notches in said tumblers and a member for operating it eXteriorly of the lock.

8. A permutation-lock comprising tumblers, a casing having a removable cover, a sliding and spring-pressed bolt for locking the cover against removal, said bolt having a lateral member for engaging notches in the tumblers, and a lateral member projecting out through the lock-casing.

9. In a permutation-lock, a casing having an annular apertured flange, a cover carrying the tumblers and provided with an annular apertured flange, a bolt for engaging the apertures of the flanges of the casing and cover, said bolt having a member for engaging the notches of the tumblers of the lock, and a member projecting out through the casing for operating it.

10. In a ermutation-lock, a casing having an annu ar apertured flange, a cover car rying the tumblers of the lock and provided with an annular apertured flange, a sliding and spring-pressed bolt on the cover for engaging the apertures of the said flanges, said bolt being provided with a transversely-extending arm for engaging notches in the tumblers, and a handle projecting out through the casing.

11. In a permutation-lock, a casing, an apertured back plate, means for securing said back plate in place, a cover, means for locking the cover against removal, a member arranged between the cover and the back plate to conceal the fastening means of said back plate, and means for securing said member in position.

12. In a permutation-lock, a casing having a removable back plate, means for securing the back plate to the casing, a removable cover, means for locking the cover in position, and a ring detachably connected with the back plate and arranged between the said plate and cover to conceal the fastening means of the plate. 2

13. In a permutation-lock, a casing, an apertured back plate, means for securing the back plate to the casing, a cover, means for locking the cover against removal, and a ring arranged between the cover and back plate to conceal the fastening means of the back plate, said ring being provided with an arm engaging a notch in the back plate.

. 14. A permutation-lock comprising permutation mechanism, a casing therefor having a removable closure, and locking means for said closure comprising a removable member which when removed prevents looking of said closure.

15. A permutation-lock having its casing provided with a removable cover, notched tumblers mounted on the casing, and a locking-bolt on the said cover for locking the cover to the casing, the bolt having a removable pin for engagement with the notches of the tumblers.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

FRANK DUESTERWALD.

Witnesses:

THEO. G. HOSTER, EVERARD BoLToN MARSHALL. 

